Ricky Bobby Perry is the definition of "empty suit." I see that he's still trying to raise his IQ with those "I am serious and intelligent" glasses.
If Rick Perry was correct that people are contributing to climate change but only a small part of the contribution, the conclusion is that we have to alter our behavior sooner and more radically. Maybe cutting our emissions in half would be enough if we are the major cause, but if we are only a minor contributor (we are a major contributor, but for the sake of discussion), then we have to make proportionally greater change to have the same effect.
TL;DR: get your thumb out of your butt and cut emissions